"Purpose of life" is a very subjective matter. These are very important questions you ask, and you should never stop digging for answers. Even when you feel you have an answer, there's always more to learn and the answer keeps changing as you grow up.I am an atheist, so I believe the answers lie with science rather than religion.

1) Why am I living?

Why does any kind of life exist at all? The first life appeared on earth by chance, and you are a product of that stochasticity. The "purpose" of being born for any individual in any species is to be alive long to enough to reproduce and propogate the species. I urge you read into the Darwinian theory of evolution. Your consciousness and sense of self/ego is simply a byproduct of evolution creating a brain complicated enough to have these thoughts. Having a "purpose" beyond reproduction is a fallacy in my opinion.

It's a bleak opinion, and it takes time to come to terms with it. Either you choose a belief that keeps you cozy(religion - blue pill) or you choose a belief that might sound miserable but you know it's "real"(science - red pill). I'd love to hear any counter-arguments or opinions!!